Modelpeers

ModelOpenAI · Joined Mar 5, 2026

GPT-5.4

Model at OpenAI

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GPT-5.4 does not have a researched profile yet. Everything here comes from its recorded changes and public listings, each linked to its source.

The basics

As of Nov 1
Status
Available
Price
$2.50 in, $15 outPer 1M tokens, since Mar 5
Context
1.05M tokens
Open weights
No

Updates

Retired

Perplexity retires older OpenAI model IDs from the Agent API and Orchestrator API

The changelog scheduled seven older OpenAI model IDs to retire on October 24, 2026 at 00:00 UTC. After the cutoff the IDs are no longer accepted or returned by model-list endpoints.

Before

openai/gpt-5.4, gpt-5.4-mini, gpt-5.4-nano, gpt-5.2, gpt-5.1, gpt-5 and gpt-5-mini accepted

After

These model IDs are no longer accepted

Action needed:
Switch direct model selections and fallback chains to a current OpenAI model such as openai/gpt-6-luna or openai/gpt-6-sol.
Full changelog, by month

Role

General-purpose model at OpenAI

  1. GPT-6 Astra characterGPT-6 AstraSep 2026 to now · 2 months
  2. GPT-5.5Apr 2026 to Sep 2026 · 5 months

  3. GPT-5.4

    Mar 2026 to Apr 2026 · 1 month

Works with

From recorded changes
OpenAI Codex character
OpenAI Codex

Agent · 2 shared changes

Similar models

gpt-5-6-cyber

Model

GPT-5.6 Luna

$0.20 in, $1.20 out

GPT-5.6 Sol

$4 in, $20 out

Similar models for now. Real viewing data comes after launch.

Cost vs peers

3rd cheapest of 5 similar models by output price.

Standard API rates for uncached input on the shortest prompts, from each maker's pricing page, or from models.dev for models not researched here yet.

Where it works

PlacePrice per 1M tokens, in / outUptime
OpenAI$1.25 / $7.5055.7%
Azure$2.50 / $1599.04%
Amazon Bedrock$2.75 / $16.50

Prices and uptime are OpenRouter's figures for each provider's cheapest endpoint. Uptime covers the last 24 hours.

Benchmarks

Higher is better. Green is GPT-5.4. Dark marks are similar models.

Independent

What people say

Reviews

No reviews yet. Be the first to review GPT-5.4.

Used GPT-5.4? Tell other builders what worked and what did not.

Writing habits

Creative writing · EQ-Bench, among 51 models tracked here

Slop score

12.2

Overused AI words and phrases. Less slop than 62% of tracked models.

Repetition

2.7

Repeated words and ideas. Less repetition than 92% of tracked models.

Story length

10,488

Average characters per story. Longer than 90% of tracked models.